(COLUMBUS) - More details were released Tuesday into the cause of the small airplane crash in Columbus that killed one person and seriously injured another.

According to a preliminary investigation, the National Transportation Safety Board says the airplane's engine was going too fast as it descended and the pilot was "working frantically on a switch for the propeller."

The investigation also revealed that a flight plan had not been filed for the 14 Code of Federal Regulations Part 91 personal flight. The plane took off three minutes before the crash.

Around 9:32 a.m. July 25, a single engine plane crashed into a Columbus home. Fuel that leaked during the crash ignited the home as the plane's pilot and passenger attempted to escape.

The pilot, Gerald Clayton, and a passenger, Dennis King, were taken to Wishard Memorial Hospital's burn unit. Clayton died from his injuries on Saturday. King was still listed in serious condition Tuesday.

One of the homeowners was inside the home when the plane crashed but was not injured.